An HTTP response code is a numeric signal describing how a web server handled a request. Reading it alongside the server log gives a quick check that the request reached the application successfully. section 6.4.2
A successful local request
After opening a Flask server at http://127.0.0.1:5000, the browser displays “Hello World!” and the terminal logs 200. Here, 200 means “OK”: the request was handled successfully. section 6.4.2
from flask import Flask #1
app = Flask(__name__) #2
@app.route("/") #3
def home(): #4
return "Hello World!"
The route-connected Flask example provides the application endpoint that produces the successful response. section 6.4.2
